package com.sky.service.admin.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.mapper.admin.EmployeeMapper;
import com.sky.service.admin.EmployeeService;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.exception.PasswordErrorException;
import com.sky.result.PageResult;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {

        String username = employeeLoginDTO.getUsername();
        //密码加密后的密文（因为数据库中存的密码是密文）
        String password = DigestUtils.md5DigestAsHex(employeeLoginDTO.getPassword().getBytes());

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 添加员工
     * 0:用户名已存在
     * 1：添加成功
     *
     * @param employeeDTO
     */
    public int employeeAdd(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO, employee);
        System.out.println(employee);
        Employee byUsername = employeeMapper.getByUsername(employee.getUsername());

        if (byUsername != null) {
            return 0;
        }

        //设置账号的状态，默认正常状态 1表示正常 0表示锁定
        employee.setStatus(StatusConstant.ENABLE);
        //设置密码，默认密码123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        int i = employeeMapper.employeeAdd(employee);
        return 1;

    }

    /**
     * 员工分页查询
     *
     * @param employeePageQueryDTO
     * @return
     */
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {

        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());

        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);
        System.out.println(page);

        return new PageResult(page.getTotal(), page.getResult());

    }

    /**
     * 员工启用，禁用
     *
     * @param status
     * @param id
     */
    public void startOrStop(Integer status, Long id) {
        Employee employee = new Employee();
        employee.setStatus(status);
        employee.setId(id);
        employeeMapper.update(employee);
    }

    /**
     * 根据id查询
     *
     * @param id
     * @return
     */
    public Employee getById(Long id) {
        Employee byId = employeeMapper.getById(id);
        return byId;
    }

    /**
     * 编辑员工信息
     *
     * @param employeeDTO
     */
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);


        employeeMapper.update(employee);
    }

    /**
     * 修改密码
     *
     * @param passwordEditDTO
     */
    public boolean updatePassword(PasswordEditDTO passwordEditDTO) {

        Long empId = passwordEditDTO.getEmpId();

        String oldPassword = DigestUtils.md5DigestAsHex(passwordEditDTO.getOldPassword().getBytes());

        String newPassword = DigestUtils.md5DigestAsHex(passwordEditDTO.getNewPassword().getBytes());

        Employee employee = employeeMapper.getById(empId);

        if (!employee.getPassword().equals(oldPassword)) {
            return false;
        }
        employee.setPassword(newPassword);
        System.out.println(employee);
        employeeMapper.update(employee);
        return true;
    }

}
